2149373543 has 2 divisors, whose sum is σ = 2149373544. Its totient is φ = 2149373542.

The previous prime is 2149373503. The next prime is 2149373587. The reversal of 2149373543 is 3453739412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2149373543 - 2⁸ = 2149373287 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2149373543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149373503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074686771 + 1074686772.

It is an arithmetic number, because the mean of its divisors is an integer number (1074686772).

Almost surely, 2^2149373543 is an apocalyptic number.

2149373543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149373543 is an equidigital number, since it uses as much as digits as its factorization.

2149373543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 2149373543 is about 46361.3367257675. The cubic root of 2149373543 is about 1290.5375127145.

The spelling of 2149373543 in words is "two billion, one hundred forty-nine million, three hundred seventy-three thousand, five hundred forty-three".